Add FreeBSD support

scripts/AppImage.patch

@@ -1,23 +1,17 @@
-
-
-diff --git a/OpenRGB.pro b/OpenRGB.pro
-index 6295344a..d09bed44 100644
---- a/OpenRGB.pro
-+++ b/OpenRGB.pro
-@@ -639,8 +639,6 @@ win32:contains(QMAKE_TARGET.arch, x86) {
+--- a/OpenRGB.pro	2022-05-02 15:26:15.375947000 +0200
++++ b/OpenRGB.pro	2022-05-02 15:29:01.997135000 +0200
+@@ -1310,8 +1310,6 @@
  # Linux-specific Configuration                                                                  #
  #-----------------------------------------------------------------------------------------------#
- unix:!macx {
+ contains(QMAKE_PLATFORM, linux) {
 -    TARGET = $$lower($$TARGET)
 -
      INCLUDEPATH +=                                                                              \
      Controllers/FaustusController                                                               \
- 
-diff --git a/qt/OpenRGB.desktop b/qt/OpenRGB.desktop
-index bd71a38a..b4a0f86a 100644
---- a/qt/OpenRGB.desktop
-+++ b/qt/OpenRGB.desktop
-@@ -3,7 +3,7 @@ Type=Application
+     Controllers/LinuxLEDController                                                              \
+--- a/qt/OpenRGB.desktop	2022-05-02 15:25:52.150332000 +0200
++++ b/qt/OpenRGB.desktop	2022-05-02 15:28:27.749598000 +0200
+@@ -3,7 +3,7 @@
  Encoding=UTF-8
  Name=OpenRGB
  Comment=Control RGB lighting